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Siemens Energy to provide tech for Germany’s SuedOstLink

Jun 1, 2021
Misc
Posted by Patrick Haddad

Siemens Energy has been commissioned to provide converter technology for Germany’s SuedOstLink electricity highway.

To ensure a continued reliable supply of renewable energy in Southern Germany, transmission system operators 50Hertz and TenneT are planning to build the SuedOstLink electricity highway. It will transport excess energy from northern Germany and ensure that green electricity can be supplied to the South.

Siemens Energy will deliver the converter technology, that will enable the low-loss transport of electricity over more than 500 kilometers.The converter stations, designed to convert direct to alternating current and vice versa, will be built at Wolmirstedt in Saxony-Anhalt and near Landshut in Bavaria. In the case of excess wind energy, the northern Wolmirstedt converter station will convert the alternating current into direct current. The energy will be transported to the south via underground cables with a voltage of 525 kilovolts.

 The Isar station in the south will convert the incoming direct current back into alternating current and feed it into the distribution network.Up to two gigawatts of electricity can be transported in both directions to flexibly react to fluctuations in electricity demand and supply. The transmission capacity will be sufficient to supply more than four million households with electricity.

“An essential component of the energy transition is an efficient grid,” said Tim Holt, member of the Executive Board of Siemens Energy.  “If we want to exploit the full potential of renewable energies and thus also of the energy transition, the transmission networks must be expanded accordingly. We are pleased to be able to make an important contribution to the European energy transition with SuedOstLink.”

The high-voltage direct current (HVDC) link will include Siemens Energy’s market leading HVDC PLUS with voltage-sourced converters (VSC) based on modular multi-level converter (MMC) technology. Compared to other technologies, these systems offer advantages for the overall network operation, including flexible power control, also in regard to reactive power, and black start capability to restore the network power supply. The project represents the most powerful HVDC system in VSC technology worldwide.

Source and image: Siemens

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